19E - SANTA ANA GRADE SEPARATION PROJECT

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Santa Ana Blvd. Grade Separation • Caltrans' Carbon Monoxide (CO) protocol screening procedure demonstrated that the project would not have a material effect on localized CO concentrations; • the proposed project is not considered a project of air quality concern, as defined by 40 CFR 93.123(b)(1), and as such, a qualitative PM2.5 /PM10 (particulate matter 2.5 and 10 microns or less in diameter) hot -spot evaluation is not required. It is unlikely that the proposed project would generate new air quality violations, worsen existing violations, or delay attainment of National Ambient Air Quality Standards (NAAQS) for PM2.5 or PM10; and • the proposed project was found to have no potential for significant mobile- source air toxics (MSAT) emissions (using FHWA guidance) and is not linked with any special MSAT concern. Proposed avoidance and /or minimization measures include: AQ -1 The project would conform to Caltrans' construction requirements, as specified in the Caltrans' Standard Specifications, Section 7-1.01F (Air Pollution Control): "The Contractor shall comply with all air pollution control ordinances and statutes which apply to any work performed pursuant to the contract, including any air pollution control rules, regulations, ordinances and statutes, specified in Section 11017 of the Government Code." AQ -2 The proposed project, although not a large operation under the Rule's definition would be required to implement measures for each source of PM10 emissions, as specified in SCAQMD Rule 403 (Fugitive Dust) Implementation Handbook. 6.3 Initial Site Assessment (ISA): Table 5 lists identified or potential environmental concerns based on site reconnaissance and review of historical information sources regarding the acquisition and temporary construction easement parcels (BOLD = Recognized Environmental Condition): Follow up Phase I Environmental Site Assessments were conducted on the area along Fuller Street north of Fruit Street, the County maintenance facility and the industrial buildings at the south end of the acquisition area, south of Sixth Street. Additional Phase 11 Environmental Site Assessment was also performed on 1111 and 1143 Fruit Street (A -9). The result of the Phase 11 Site Assessment did not indicate significant soil impacts that would require remediation. However, access to the remaining properties has limited further analysis. As a result, the following recommendations were made to be completed at a later date: HAZ -1 A Phase II Environmental Site Assessment is recommended during the final design phase for parts of the study area as follows: parcel A -1 (1024 Fuller): currently the auto repair shop: sampling if indicated (interior inspection required); parcel A -2 (1022 Fuller): former machine shop with degreaser, auto wrecking and auto repair shop; parcel A -4 (1020 Fuller): former paint manufacturer, former auto body shop, former metals recovery facility; parcel A -5 (1016 Fuller): former machine shop; parcel A -6 (1012 Fuller): former paint spray booth, former paint manufacturer ( Jasco Chemical); parcel A -7 (1008 Fuller): Jasco Chemical. The Phase II ESA would include soil sampling for petroleum hydrocarbons, volatile organic compounds, heavy metals and /or those chemicals formerly stored on site by Jasco Chemical, as appropriate for each individual location. PROJECT REPORT EQUIVALENT 19E -24 15